How many chill hours does 99659 get?

99659 averages 1118 chill hours per winter, ranging from 877 to 1347 across the last 10 years.

What hardiness zone is 99659?

99659 is in USDA hardiness zone 3b.

Location almanac

The short answer

99659 averages 1,118 chill hours per winter (877–1,347 across 10 years) in USDA zone 3b.

99659 climate
Average chill hours	1,118 (877–1,347 across 10 winters)
USDA hardiness zone	3b
Last spring frost	typically May 5 – May 29
First fall frost	typically September 24 – October 16

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against 99659’s chill hours and zone:

Chill and zone requirements are comfortably met in 99659.

Show 41 more good fit varieties

How many chill hours does 99659 get?: 99659 averages 1118 chill hours per winter, ranging from 877 to 1347 across the last 10 years.
What hardiness zone is 99659?: 99659 is in USDA hardiness zone 3b.

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[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026